318 Geometric Dimensioning and Tolerancing example shown, the profile tolerance is equally disposed bilateral and has an equal disposition of 0.1 on each side of the true profile. Profile of a Line All Around Profile of a line can also specify a tolerance zone that goes around the entire object. When this is desired, the feature control frame is connected to the object with a leader as previously discussed and the all around symbol must be placed on the leader, as shown in Example 9-3. Any note indicating between two points is excluded. The specification in Example 9-3 is assumed to be a bilateral profile of a line tolerance equally split 0.2 on each side of the true profile. Unilateral and Unequally Disposed Profile of a Line An equally disposed bilateral profile tolerance is assumed unless unilateral or unequally disposed specifications are provided. A unilateral profile is where the entire tolerance zone is on one side of the true profile. When a unilateral profile tolerance is required, the unequally disposed symbol is placed after the geometric tolerance in the feature control frame as shown in Example 9-4. When the unilateral profile tolerance has material added to the feature or part, the profile tolerance All Around Symbol Specifications The Drawing The Meaning H = Letter height H All around symbol True profile 0.4 profile tolerance zone Example 9-3. A profi le of a line tolerance specifi ed all around.